Printing machine for sensitized material



Feb. 3, 1931.

H. H. SULLIVAN PRINTING MACHINE FOR SENSITIZED MATERIAI Filed Nov. 2,1'92? 4 Sheets-$heet 1 in} ATTO R N EY Feb. 3, 1931. H su v 1,790,881

PRINTING MACHINE FOR SENSITIZED MATERIAL Filed Nov. 2. 1927 4Sheets-Sheet 2 '0 j INVENTOR Va/1:7 f/cues \Wdn W /Q EMW m ATTORNEY Feb.3, 1931. H. H. SULLIVAN PRINTING MACHINE FOR SENSITIZED MATERIAL FiledNov. 2, 1927 4 Sheets-Sheet 3 I"; ATTORNEY Feb. 3, 1931. H. H. SULLIVAN1,790,331

PRINTING MACHINE FOR SENSITIZED MATERIAL I Filed Nov. 2. 1927 4Sheets-Sheet 4 l 1x1. l M 6 4 l M m 7 l..\} m R w \1 w .T F u I. m A a nM 1 P. H

Patented Feb. 3, 1931 1 790 1 UNITED STATES PATENT oer-"res HARRY HEWESSULLIVAN, OF ROCHESTER, NEW YORK PRINTING MACHINE FOR SENSITIZEDMATERIAL Application filed November 2, 1927. Serial No. 230,640.

The present invention relates to printing 11 to the glass or transparentbed 4 and machines for sensitized material and more after passing underthis bed they are disparticula rly to the type in which the blastcharged into the receptacle 14 from a point producing means is employedfor mairrtainbetween the roller and the curved plate 12.

I 5 ing the bed in a cool condition or state. An The operating mechanismfor this feeding object of this invention is to provide a novelmechanism may not be described herein as construction which permits theconcentrait is a well known construction.

tion of the blast upon those portions of the The illuminating meansembodies a numbed subjected to greatest heat. Another obber of arc lamps15 suspended from the 1o ject of the invention is to associate with aswitch box 3 over the concave face of the bed peripheral dischargingrotary blower, a 4 so that the globes 16' of these lamps procasing whichwill distribute the blast of air ject below the ends of the curved bed,wherein the most desirable position over the glass by the ra s from thelamps are projected bed of the machine. downwar ly and also outwardlycovering To these and other ends, the invention eonpractically theentire surface of the curved sists of certain parts and combinations ofed on the concave side thereof.

parts all of which will be hereinafter de- Prior to this invention thesebeds have scribed; the novel features being pointed out been cooled by afan arranged at one end of in the appended claims. the machine anddistributing the air over the I In the drawings: concave surface of thebed, the air being Fig. 1 is an end view of the machine condischargedfrom the fan in the direction of structed in accordance with thisinvention; the axis of rotation of the fan. In Patent Fig. 2' is avertical section through the No. 1,549,034, granted Aug. 11, 1925, Ihave machine; disclosed a deflector used in connection with i Fig. 3 isa section on the line 33, Fig. 6; a fan of the type mentioned the airimping- Fig. 4 is a section on the line 44, Fig. 2; ing this deflectorand being directed over the Fig. 5 is a section on the line 55, Fig. 2;concave side of the bed. In this invention, a Fig. 6 is a section on theline 6'6, Fig. 3; greater supply of air is obtained and a more andeffective distribution of the air over the glass 7 Fig. 7 is a sectionon the line 7-7, Fig. 3; bed is secured by providing a rotary blowerReferring more particularly to the drawof the type in which the air isdischarged ings, 1 indicates the side framesconneeted from the blades ofthe blower substantially together by tie rods 2 and a switch box 3.perpendicular to the axis of the blower or Between the two frames isalso supported a at the periphery of the blower, the blower curved orU-shaped glass or transparent being enclosed in a casing which has adisbed 4, the concave face of which isdisposed charge so positioned thata stream of air upwardly so that the ends of the bed extend issuestherefrom, the main stream thereof upwardly. An endless belt 13 formingthe traveling across the bed transversely of the feeding means for thesensitized material line of feed of the sheets substantially at "40passes on the convex or underside of this the lowermost portion of thebed, the air to bed 4 and also about rollers 5, 6, 7, 8 and 9, spreadingfrom the axis of the stream laterthe rollers 8 and- 9 being arranged atthe ally and up the upwardly curved ends of the intake end of themachine at the rear of :a bed, thus maintaining the bed asa whole infeed table 10 projected laterally from the a cool condition. Provisionis also made for i machine. Adjacent the intake and the disclosing theopposite side of the bed except charge ends of the machine are twoplates at a small outlet adjacent the lowermost por- 11 and 12cooperating respectively with the tion of the bed. rollers 8 and 5. Thesheets to be printed In the illustrated embodiment of the inare placedon the belt 13 adjacent the roller venti-on 16 indicates the shaft ofthe blower 8 and are carried by the'belt under the plate supporting tworings 17 spaced apart by radial blades 18 so that air is thrown from theperiphery of the blower as the latter rotates. This blower is enclosedwithin a casing comprising an outer wall. 19 having a central portion ofcup formation provided with a central opening 20 concentric with theshaft 16* of the blower and having an area substantially coextensivewith the openings at the center of the rings 17 The outer wall 19 alsoforms a closure for an opening in one of the side frames 1 and issecured in said opening by bolts 21 passing through the side frame andthe ears 22 projecting outwardly from the outer wall. The inner wall 23of the casing is in the form of a plate having an opening 2% concentricwith the shaft 16 of the blower and also provided at its lower end withan opening 25 beyond the periphery of the rotary blower. The opening 25is directly opposite pocket 26 at the lower portion of the cup shapedportion of the outer wall and the lowermost end wall 27 of this pocketis at an oblique angle to the axis of turning on shaft 16 of the rotaryblower. As the blower turns, it not only draws air from the outside ofthe machine but also draws air from the space from above the uppersurface of the bed f and this air is thrown from the periphery of therotary blower and is collected in the pocket 26, being deflected by thewall 27 of the. pocket through the opening 25 of the inner wall. Thisopening is situated in close proximity to the lowermost portion of theupper surface of the curved bed so that the air issues from the openingwith its main axis extending transversely of the line of feed of thesheet material but at an oblique angle to such line of feed. This airthen spreads laterally from the main axis of the stream and follows upth curved ends thereby maintaining the bed in cool condition. At the topthere is an opening 28 through which the air escapes.

The opposite side of the machine has an opening in the side frame closedby a plate 29 which is bolted at 30 to the side frame and has the mainportion of its wall inclined downwardly and outwardly from its top edgeso that an offset portion 31 is provided at the lower portion of theplate. This offset portion has an outlet portion 32 which is in closeproximity to the lowermost portion of the concave surface of the bed andwhich provides an outlet for the stream of air passing across the bed sothat an air pocket will. not be formed at the side of the bed oppositethe blower.

It is apparent that this invention enables the use of a rotary blower asdistinguished from a fan for cooling the concave bed of a printingmachine. The blower makes less noise than the fan and its casing is soconstructed that the main axis of the stream of air is directly betweenthe lowermost portions of the lamp and the bed where the greatest heatexists, the stream passing in a line which is oblique to the line offeed starting slightly to one side of the line of the lamps and passingslightly to one side of the lamp line at the other side of the machinewhere it issues out of the opening 32. The main stream also spreadslaterally up the upturned ends of the bed,

What I claim as my invention and desire to secure by Letters Patent is:

1. In a printing machine, the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the con vex face of the bed from one upwardlyturned end to the other and illuminating means arranged over the concaveface of the bed, said illuminating means embodying a series of lampsarranged transversely of the bed at the middle of the same, of coolingmeans for the bed comprising a rotary blower of the peripheral dischargetype arranged at one side of the bed, and a casing enclosing said blowerand having a discharge portion beyond the periphery of the blower,opening above the bed between the two upwardly extending end portionsthereof and in close proximity to the upper concave face of the bedadjacent the lowermost part thereof and beneath the illuminating meansso as to concentrate the main blast at the hottest part of the bed, themain axis. of the blast as it issues from the casing extendingtransversely of the line of feed of the material,

2. In a printing machine, the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the convex face of the bed from one upwardlyturned end to the other and illuminating means arranged over the concaveface of the bed, said illuminating means embodying a series of lampsarranged transversely of the bed at the middle of the same, of coolingmeans for the bed comprising a rotary blower of the peripheral dischargetype arranged at one side of the bed, and a casing enclosing said blowerand having a discharge portion beyond the periphery of the blower,opening above the bed between the two upwardly extending end portionsthereof and in close proximity to the upper concave face of the bedadjacent the lowermost part thereof and beneath the illuminating meansso as to concentrate the main blast at the hottest part of the bed, themain axis of the blast as it issues from the casing extendingtransversely of the line of feed of the material but at an oblique angleto such line of feed.

3. In a printing machine, the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the convex face of the bed from one upwardlyturned end to the other, and illuminatin means arranged over the concaveface of t e bed, said illuminating means embodying a series of lampsarranged transversel of the bed at the middle of the same, of coohngmeans for the bed comprising a rotary blower of the peripheral dischargetype arranged at one end of the bed with its axis extending transverselyof the line of feed of the material over the bed and above the concaveface between the two upwardly extending end portions, and a casingenclosing said rotary blower and having a discharge in the side wallthereof beyond the periphery of the rotary blower, the Wall of saidcasing adjacent the discharge opening being formed to direct the mainaxis of the blast transversely of the line of feed of the material andbeneath the illuminating means so that the main blast is concentrated atthe hottest part of the bed.

4. In a printing machine the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the convex face of the bed, illuminating meansan ranged over the concave face of the bed, the top of the bed beingopen to permit the heat from the bed to rise, of a rotary blower of theperipheral discharge type arranged at one side of the bed, a casingenclosing said blower and having intake openings on opposite sidesthereof in line with the axis of rotation of the blower one of saidopenings being disposed toward the space between the upwardly extendingportions of the bed and the other of said openings being disposed towardthe outside of the machine so that air may be drawn from the space abovethe bed and also from the outside of the machine, and said casing alsohaving a discharge beyond the periphery of the blower opening above thebed between the two upwardly extending end portions thereof and in closeproximity to the upper concave face of the bed adjacent the lowermostportion thereof, the main axis of the blast as it issues from the casingextending transversely of the line of feed of the materiaL 5. In aprinting machine, the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the convex face of the bed from one upwardlyturned end to the other, and illuminating means arranged over theconcave face of the bed, said illuminating means embodying a series oflamps arranged transversely of the bed at the middle of the same, of aclosure for the space between the upwardly extending portions at one endof the bed having an opening adjacent the lowermost portion of theconcave face of the bed, a casing closing the opposite end of the bedbetween the upwardly extending portions and having a discharge portionin close proximity to the concave face of the bed adjacent the lowermostportion of the latter and below the lower portions of the lamps, and ablower of the peripheral discharge type arranged in the latter casingand having its periphery operating above the discharge opening of thecasing to cool the bed.

6. In a printing machine, the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the convex face of the bed from one upwardlyturned end to the other, and illuminating means arranged over the convexface of the bed, said illuminating means embodying a series of lampsarranged transversely of the bed at the middle of the same, of coolingmeans for the bed, a blower casing arranged at one end of the bed andhaving a discharge portion in close proximity to the lowermost portionof the upper concave face of the bed and below the lower ends of thelamps, a rotary blower of the peripheral discharge type arranged in saidcasing.

7. In a printing machine the combination with a substantially U shapedtransparent bed. having its end portions extending upwardly, a line oflamps depending over the bed between the upturned ends, a blower, acasing enclosing the blower and having an outlet shaped to direct themain axis of the stream of air from the blower between the lowerportions of the lamps and the bed starting slightly to one side of theline of lamps and passing across the line to a point slightly to theother side of the lamp line, and a housing enclosing the lamps, open atits top and having an opening at its side opposite the blower.

8. In a printing machine, the combination with a substantially U shapedtransparent bed having its end portions extending upwardly, means forfeeding the material over the convex face of the bed, and illuminatinglamps depending in a line over the bed between the upturned ends, of bedcooling means directing a stream of air between the lower ends of f thelamps and the bed, the main axis of the said stream starting to one sideof the line of lamps and passing across the line to the other side ofsaid line.

HARRY HEWES SULLIVAN.

